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Finding the Third Proportional to 973 and 1,123

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Solution

The third proportional to 973 and 1,123 is: 1,296.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    973 : 1,123 = 1,123 : x
  2. Step 2: Convert to fraction form
    973/1,123 = 1,123/x
  3. Step 3: Cross multiply
    973x = 1,123 × 1,123
  4. Step 4: Simplify right side
    973x = 1,261,129
  5. Step 5: Solve for x
    x = 1,261,129/973
  6. Step 6: Final answer
    x = 1,296.12

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Why These Related Problems?

These problems maintain the same ratio (1.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.